I too had an internet cafe’ but when i wanted to open Call Centre i all together opted for another setup and let the cafe alone.Reasons:-
1)Computers and setup are just small part of Call centre.
2)Good calling agents and staff are the 70% important part in call centre.
3) One cannot retain good agents for long or get those with internet cafe setup since working environment is important to good quality staff.Attrition is high in this industry.
4)If you want to expirement with 10 seats its ok with internet cafe for month or so to get first hand experience but with dedicated call centre looking on long term basis a Dedicated setup is important having a seperate calling area, teaching space , and seperate office for HR work.
See one can if one wants to push it open a call centre in cafe but real profit making call centre’s need dedicated infrastructure with quality staff who needs good environment.Dont waste money just because one has pc and a surfing setup.